Explanation:
use zgrep to get the line starting with time or mem
use sed to convert multiple spaces to single space
use sed again to get only the line containing Memory or time
use sed the last time to merge the 2 lines

Some times I need random string, for example to use as email seperator or to use in some API. One way is to use tools like /dev/[u]random or od and other such. But they seem cubersome after I figured this out.

openssl rand <length>
openssl rand 10

This alone without some parameters is not interesting thoug. You can use ‘-base64’ or ‘-hex’ to select the encoding.